Quick answers
- Where does John K. Corless see patients?
- Medicare's clinician data lists 1 practice location in Charleston, SC. Call before your visit to confirm the address.
- What is John K. Corless's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does John K. Corless accept Medicare assignment?
- Yes. Medicare's clinician data says John K. Corless accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for John K. Corless?
- (843) 792-1414, as listed in official Medicare / NPI Registry data.
- What is John K. Corless's NPI number?
- 1962408443. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John K. Corless is enrolled with Medicare (CMS data updated 2026-10-02).
- 171 Ashley AveCharleston, SC 29425 (843) 792‑1414
Group practices
Medicare enrollment lists John K. Corless as a member of this group (CMS data updated 2026-10-02).
- University Medical Associates of the Medical University of South Carol1,668 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Charleston
Clinicians with the same Medicare primary specialty in Charleston, SC — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1977 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1962408443 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians